#include "usbd_cdc.h"
#include "usbd_core.h"
#include "usbd_hid.h"
#include "usbd_msc.h"

/*!< endpoint address */
#define CDC_IN_EP 0x81
#define CDC_OUT_EP 0x02
#define CDC_INT_EP 0x83

#define MSC_IN_EP 0x84
#define MSC_OUT_EP 0x05

/*!< endpoint address */
#define HID_INT_EP 0x86
#define HID_INT_EP_SIZE 4
#define HID_INT_EP_INTERVAL 10

#define USBD_VID 0xFFFF
#define USBD_PID 0xFFFF
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033

/*!< report descriptor size */
#define HID_MOUSE_REPORT_DESC_SIZE 74

#define USB_CONFIG_SIZE (9 + CDC_ACM_DESCRIPTOR_LEN + MSC_DESCRIPTOR_LEN + 25)

#ifdef CONFIG_USB_HS
#define CDC_MAX_MPS 512
#else
#define CDC_MAX_MPS 64
#endif

#ifdef CONFIG_USB_HS
#define MSC_MAX_MPS 512
#else
#define MSC_MAX_MPS 64
#endif

const uint8_t cdc_acm_hid_msc_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID,
                               0x0200, 0x01),
    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x04, 0x01,
                               USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP,
                            CDC_MAX_MPS, 0x02),
    MSC_DESCRIPTOR_INIT(0x02, MSC_OUT_EP, MSC_IN_EP, MSC_MAX_MPS, 0x02),
    /************** Descriptor of Joystick Mouse interface ****************/
    /* 09 */
    0x09,                          /* bLength: Interface Descriptor size */
    USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType: Interface descriptor type
                                    */
    0x03,                          /* bInterfaceNumber: Number of Interface */
    0x00,                          /* bAlternateSetting: Alternate setting */
    0x01,                          /* bNumEndpoints */
    0x03,                          /* bInterfaceClass: HID */
    0x01,                          /* bInterfaceSubClass : 1=BOOT, 0=no boot */
    0x02, /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */
    0,    /* iInterface: Index of string descriptor */
    /******************** Descriptor of Joystick Mouse HID ********************/
    /* 18 */
    0x09,                    /* bLength: HID Descriptor size */
    HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
    0x11,                    /* bcdHID: HID Class Spec release number */
    0x01, 0x00,              /* bCountryCode: Hardware target country */
    0x01, /* bNumDescriptors: Number of HID class descriptors to follow */
    0x22, /* bDescriptorType */
    HID_MOUSE_REPORT_DESC_SIZE, /* wItemLength: Total length of Report
                                   descriptor */
    0x00,
    /******************** Descriptor of Mouse endpoint ********************/
    /* 27 */
    0x07,                         /* bLength: Endpoint Descriptor size */
    USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */
    HID_INT_EP,                   /* bEndpointAddress: Endpoint Address (IN) */
    0x03,                         /* bmAttributes: Interrupt endpoint */
    HID_INT_EP_SIZE,              /* wMaxPacketSize: 4 Byte max */
    0x00, HID_INT_EP_INTERVAL,    /* bInterval: Polling Interval */
    ///////////////////////////////////////
    /// string0 descriptor
    ///////////////////////////////////////
    USB_LANGID_INIT(USBD_LANGID_STRING),
    ///////////////////////////////////////
    /// string1 descriptor
    ///////////////////////////////////////
    0x14,                       /* bLength */
    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
    'C', 0x00,                  /* wcChar0 */
    'h', 0x00,                  /* wcChar1 */
    'e', 0x00,                  /* wcChar2 */
    'r', 0x00,                  /* wcChar3 */
    'r', 0x00,                  /* wcChar4 */
    'y', 0x00,                  /* wcChar5 */
    'U', 0x00,                  /* wcChar6 */
    'S', 0x00,                  /* wcChar7 */
    'B', 0x00,                  /* wcChar8 */
    ///////////////////////////////////////
    /// string2 descriptor
    ///////////////////////////////////////
    0x26,                       /* bLength */
    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
    'C', 0x00,                  /* wcChar0 */
    'h', 0x00,                  /* wcChar1 */
    'e', 0x00,                  /* wcChar2 */
    'r', 0x00,                  /* wcChar3 */
    'r', 0x00,                  /* wcChar4 */
    'y', 0x00,                  /* wcChar5 */
    'U', 0x00,                  /* wcChar6 */
    'S', 0x00,                  /* wcChar7 */
    'B', 0x00,                  /* wcChar8 */
    ' ', 0x00,                  /* wcChar9 */
    'C', 0x00,                  /* wcChar10 */
    'M', 0x00,                  /* wcChar11 */
    'H', 0x00,                  /* wcChar12 */
    ' ', 0x00,                  /* wcChar13 */
    'D', 0x00,                  /* wcChar14 */
    'E', 0x00,                  /* wcChar15 */
    'M', 0x00,                  /* wcChar16 */
    'O', 0x00,                  /* wcChar17 */
    ///////////////////////////////////////
    /// string3 descriptor
    ///////////////////////////////////////
    0x16,                       /* bLength */
    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
    '2', 0x00,                  /* wcChar0 */
    '0', 0x00,                  /* wcChar1 */
    '2', 0x00,                  /* wcChar2 */
    '2', 0x00,                  /* wcChar3 */
    '1', 0x00,                  /* wcChar4 */
    '2', 0x00,                  /* wcChar5 */
    '3', 0x00,                  /* wcChar6 */
    '4', 0x00,                  /* wcChar7 */
    '5', 0x00,                  /* wcChar8 */
    '6', 0x00,                  /* wcChar9 */
#ifdef CONFIG_USB_HS
    ///////////////////////////////////////
    /// device qualifier descriptor
    ///////////////////////////////////////
    0x0a, USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00,
    0x40, 0x01, 0x00,
#endif
    0x00};

/*!< hid mouse report descriptor */
static const uint8_t hid_mouse_report_desc[HID_MOUSE_REPORT_DESC_SIZE] = {
    0x05, 0x01,  // USAGE_PAGE (Generic Desktop)
    0x09, 0x02,  // USAGE (Mouse)
    0xA1, 0x01,  // COLLECTION (Application)
    0x09, 0x01,  //   USAGE (Pointer)

    0xA1, 0x00,  //   COLLECTION (Physical)
    0x05, 0x09,  //     USAGE_PAGE (Button)
    0x19, 0x01,  //     USAGE_MINIMUM (Button 1)
    0x29, 0x03,  //     USAGE_MAXIMUM (Button 3)

    0x15, 0x00,  //     LOGICAL_MINIMUM (0)
    0x25, 0x01,  //     LOGICAL_MAXIMUM (1)
    0x95, 0x03,  //     REPORT_COUNT (3)
    0x75, 0x01,  //     REPORT_SIZE (1)

    0x81, 0x02,  //     INPUT (Data,Var,Abs)
    0x95, 0x01,  //     REPORT_COUNT (1)
    0x75, 0x05,  //     REPORT_SIZE (5)
    0x81, 0x01,  //     INPUT (Cnst,Var,Abs)

    0x05, 0x01,  //     USAGE_PAGE (Generic Desktop)
    0x09, 0x30,  //     USAGE (X)
    0x09, 0x31,  //     USAGE (Y)
    0x09, 0x38,

    0x15, 0x81,  //     LOGICAL_MINIMUM (-127)
    0x25, 0x7F,  //     LOGICAL_MAXIMUM (127)
    0x75, 0x08,  //     REPORT_SIZE (8)
    0x95, 0x03,  //     REPORT_COUNT (2)

    0x81, 0x06,  //     INPUT (Data,Var,Rel)
    0xC0, 0x09, 0x3c, 0x05, 0xff, 0x09,

    0x01, 0x15, 0x00, 0x25, 0x01, 0x75, 0x01, 0x95,

    0x02, 0xb1, 0x22, 0x75, 0x06, 0x95, 0x01, 0xb1,

    0x01, 0xc0  //   END_COLLECTION
};

/*!< mouse report struct */
struct hid_mouse {
  uint8_t buttons;
  int8_t x;
  int8_t y;
  int8_t wheel;
};

/*!< mouse report */
static struct hid_mouse mouse_cfg;

#define HID_STATE_IDLE 0
#define HID_STATE_BUSY 1

/*!< hid state ! Data can be sent only when state is idle  */
static volatile uint8_t hid_state = HID_STATE_IDLE;

/* function ------------------------------------------------------------------*/
static void usbd_hid_int_callback(uint8_t ep, uint32_t nbytes) {
  hid_state = HID_STATE_IDLE;
}

/*!< endpoint call back */
static struct usbd_endpoint hid_in_ep = {.ep_cb = usbd_hid_int_callback,
                                         .ep_addr = HID_INT_EP};

USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048];
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048] = {
    0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30};

volatile bool ep_tx_busy_flag = false;

#ifdef CONFIG_USB_HS
#define CDC_MAX_MPS 512
#else
#define CDC_MAX_MPS 64
#endif

void usbd_event_handler(uint8_t event) {
  switch (event) {
    case USBD_EVENT_RESET:
      break;
    case USBD_EVENT_CONNECTED:
      break;
    case USBD_EVENT_DISCONNECTED:
      break;
    case USBD_EVENT_RESUME:
      break;
    case USBD_EVENT_SUSPEND:
      break;
    case USBD_EVENT_CONFIGURED:
      /* setup first out ep read transfer */
      usbd_ep_start_read(CDC_OUT_EP, read_buffer, 2048);
      break;
    case USBD_EVENT_SET_REMOTE_WAKEUP:
      break;
    case USBD_EVENT_CLR_REMOTE_WAKEUP:
      break;

    default:
      break;
  }
}

void usbd_cdc_acm_bulk_out(uint8_t ep, uint32_t nbytes) {
  USB_LOG_RAW("actual out len:%d\r\n", nbytes);
  /* setup next out ep read transfer */
  usbd_ep_start_read(CDC_OUT_EP, read_buffer, 2048);
}

void usbd_cdc_acm_bulk_in(uint8_t ep, uint32_t nbytes) {
  USB_LOG_RAW("actual in len:%d\r\n", nbytes);

  if ((nbytes % CDC_MAX_MPS) == 0 && nbytes) {
    /* send zlp */
    usbd_ep_start_write(CDC_IN_EP, NULL, 0);
  } else {
    ep_tx_busy_flag = false;
  }
}

/*!< endpoint call back */
struct usbd_endpoint cdc_out_ep = {.ep_addr = CDC_OUT_EP,
                                   .ep_cb = usbd_cdc_acm_bulk_out};

struct usbd_endpoint cdc_in_ep = {.ep_addr = CDC_IN_EP,
                                  .ep_cb = usbd_cdc_acm_bulk_in};

struct usbd_interface intf0;
struct usbd_interface intf1;
struct usbd_interface intf2;
struct usbd_interface intf3;

void cdc_acm_hid_msc_descriptor_init(void) {
  usbd_desc_register(cdc_acm_hid_msc_descriptor);

  usbd_add_interface(usbd_cdc_acm_init_intf(&intf0));
  usbd_add_interface(usbd_cdc_acm_init_intf(&intf1));
  usbd_add_endpoint(&cdc_out_ep);
  usbd_add_endpoint(&cdc_in_ep);

  usbd_add_interface(usbd_msc_init_intf(&intf2, MSC_OUT_EP, MSC_IN_EP));

  usbd_add_interface(usbd_hid_init_intf(&intf3, hid_mouse_report_desc,
                                        HID_MOUSE_REPORT_DESC_SIZE));
  usbd_add_endpoint(&hid_in_ep);

  /*!< init mouse report data */
  mouse_cfg.buttons = 0;
  mouse_cfg.wheel = 0;
  mouse_cfg.x = 0;
  mouse_cfg.y = 0;

  usbd_initialize();
}

/**
 * @brief            hid mouse test
 * @pre              none
 * @param[in]        none
 * @retval           none
 */
void hid_mouse_test(void) {
  /*!< move mouse pointer */
  mouse_cfg.x += 10;
  mouse_cfg.y = 0;
  int ret = usbd_ep_start_write(HID_INT_EP, (uint8_t *)&mouse_cfg, 4);
  if (ret < 0) {
    return;
  }
  hid_state = HID_STATE_BUSY;
  while (hid_state == HID_STATE_BUSY) {
  }
}

volatile uint8_t dtr_enable = 0;

void usbd_cdc_acm_set_dtr(uint8_t intf, bool dtr) {
  if (dtr) {
    dtr_enable = 1;
  } else {
    dtr_enable = 0;
  }
}

void cdc_acm_data_send_with_dtr_test(void) {
  if (dtr_enable) {
    memset(&write_buffer[10], 'a', 2038);
    ep_tx_busy_flag = true;
    usbd_ep_start_write(CDC_IN_EP, write_buffer, 2048);
    while (ep_tx_busy_flag) {
    }
  }
}

#define BLOCK_SIZE 512
#define BLOCK_COUNT 10

typedef struct {
  uint8_t BlockSpace[BLOCK_SIZE];
} BLOCK_TYPE;

BLOCK_TYPE mass_block[BLOCK_COUNT];

void usbd_msc_get_cap(uint8_t lun, uint32_t *block_num, uint16_t *block_size) {
  *block_num = 1000;  // Pretend having so many buffer,not has actually.
  *block_size = BLOCK_SIZE;
}

int usbd_msc_sector_read(uint32_t sector, uint8_t *buffer, uint32_t length) {
  if (sector < 10) memcpy(buffer, mass_block[sector].BlockSpace, length);
  return 0;
}

int usbd_msc_sector_write(uint32_t sector, uint8_t *buffer, uint32_t length) {
  if (sector < 10) memcpy(mass_block[sector].BlockSpace, buffer, length);
  return 0;
}
